[Bug 27522] New: Mouse motion blocked or laggy while clicking

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=27522

           Summary: Mouse motion blocked or laggy while clicking
           Product: Wine
           Version: 1.3.19
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-dinput
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: pilota51 at gmail.com


This regression started in 1.3.19 and appears to be related to the fix of Bug
6971.

I posted Bug 6971 comment 512 regarding this issue trying to see if anyone else
was experiencing it, which seemed to be ignored. I'm not sure if the lack of
complaints is because of a rare combination on my system or because not many
people play the affected games in Wine. I've recently reinstalled Ubuntu (for
other reasons) and tried a clean .wine directory as per the guidelines, but
this issue remained.

In Battlefield 1942 starting at 1.3.19, the mouse completely stops moving when
clicking a mouse button and allows moving again when the button is released.
The issue exists both in the menu and in-game. BF1942 did not experience Bug
6971.
In 1.3.19 (not later releases, but worth noting) only the first click would
register. All clicks register in 1.3.20 and later.

In Unreal Tournament 3 starting at 1.3.20, with the option enabled, there is
significant lag in mouse movement while clicking, about 1 second between
refreshes. With it disabled, there is no issue with clicking and moving the
mouse simultaneously, but of course the mouse will leave the window.
I've also noticed that while clicking and inducing the lag, the range of the
mouse is limited, which tells me the issue with window borders hasn't been
fixed entirely even though the mouse doesn't escape. Releasing the button will
allow full motion.
This is what I did to test how the mouse range behaves:
1. Hold a button down and rotate all the way to the right until it won't go
further.
2. Release button, either don't rotate or only rotate right.
3. Hold button again and notice how it still doesn't move any further right.
4. Release button and spin left a few times.
5. Hold button and notice how it won't rotate any further left.

The reason UT3 didn't have this issue in 1.3.19 is because the option simply
didn't work until Bug 6971 was fixed in 1.3.20. As for why BF1942 has this
problem and other games don't, I have a few guesses but I'm not sure.

If I have time later I might mess with the source and build it to find exactly
which code causes it. Looks like one of the last 3 commits on mouse.c contain
the cause.

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